Oven, cupboard, and other similar apparatus



Nov. 2l, 1933. E' w|| s0N 1,936,124

OVEN, CUPBOARD, AND OTHER SIMILAR APPARATUS Filed Sept. l2, 1931 2Sheets-Sheet l y ff i 16-5` iii-1-1:' 2 fido" @rif j ,@0/:/ \;?0

/l fp. Il? 35' 19 ,e9 .37W Fl Z@ Nov. 21, 1933. A E. L. wlLsoN 1,935,124

OVEN, CUPBOARD, AND OTHER SIMILAR APPARATUS Filed sept. 12, 1931z-sheets-sheet 2 @fa/591616:

Patented Nov. 21, 1933 ovEN, cUrEoAEnAND o'rnEE SIMILAR APPARATUS jErnest Lodge Wilson,

Application September 12,'

562,545, and in Great Britain September 7 anims. micia-174) Thisinvention relates to ovens, cupboards and the like and has for itsobject to provide means whereby when a door of such a device` is movedto the open position, a shelf orshelves are drawn outwards or projectedtherefrom, preferably after a desired amount of lost motion, andcorrespondingly when the said door closed position, the shelf or shelvesare retracted,

thatis moved back into their normal position in the oven, cupboard orthe like.

In' general, ovens, cupboards and the like constructed according yto theinvention comprise a series of interconnected lazytong links and leversdetachably or otherwise connected .with a shelf or the like Yof the ovenor cupboard to be projected and retracted, a suitablermember or membersof the lazytong system being connected to the door in a suitableposition, through a link and lever, or other mechanism,` sired amount oflost motion, oi lsuch a character and in such a manner that when thedoor is opened, through a desired angle, say for kexample substantially90, the lost motion takes up the movement, but upon further openingmovement, the connection between the door and the lazytong member ormembers is effective to operate the lazytong system and cause it toproject the shelf or thel like a desired degree from the oven, cupboardorthe like, suitable guides orV supports being provided to permit themovements of the said shelf or the' like; Correspondingly, upon movingthe door from the fully open position to the closed position, at thefirst part of the movement, Athe shelf is retracted into the oven,cupboard or the like so lthat theclosing of the door can be eiiectedwithout vrisk of fouling the'projecting shelf or the like. y

A single lazytong and.' associated mechanical system can be provided inconnection with the door, to operate upon and move a Vsingle shelf .orthe like, orto move aninner part of the oven,

` cupboard or the like, cr in some cases more than one lazytong andassociated mechanical system may be operated from the same door, to move4 more than one shelf or the like, or an inner portion oi the oven,cupboard or the like.

The inventionis particularly suitable for and advantageous when used indomestic and other those utilizing gas, electricity or otherwise as theheating medium, be-

cause in this case it enables the roasting or other shelf (which may beof grid-like form) to becontrolled. This control allows the `shelf to beprojected when the oven door vis fully opened, enabling the dish or thelike containing the food to be placed thereon or lifted therefrom in anextremely convenient rmanner and without risk of burning the hands,whilst at the same time when the shelf has beenbrought to theretra'ctedposition, it enables the door to be openedl through ismoved to thepermitting a de-` Y The rear .verse portion 15, so

Wallington', England 1931, Serial No.

a wide angle, the progress of the cooking operation can be observedwithout disturbing it.

In order that the invention may be better 'understood, it will nowbedescribed with reference to the accompanying drawings in whicl1:-V j

Figs. 1, 2 and 3 show somewhat diagrammatically sectional plan views ofan oven mechanism according toy one embodiment of the invention,

in the closed position of the oven door, the partwithout moving theshelf, so that ly opened position of the said door and the fully openedposition respectively. Y

Fig. 4 shows a somewhat fragmentary sectional side elevation. v ,j Fig.51S a vertical sectional view of amodifled form of the invention. l i

The particular means for carrying the invention into reiect as appliedvto an oven and shown on vthe drawings comprises a set or series oflazytong links or levers 6 arranged as shown in asubstantially'horizontal plane, with their pivots vertical, across theback f1 of the oven'or the like at a suitable level. ".lhe outer ends ofthe levers if desired may rest upon inwardly projecting guides or thevlike carried by the sides of the oven, and the rearmost links 8,0n1yextend from the outer extremities to the centre, that is to say, theserearmost links are, as shown, half Ilinks, and at the centre point'theyare pivotally connected to a suitable lug or lugs 9 formed with orattached to the backof the oven by.' means of a removable bolt, pin orthe like 10.

`The lug or lugs 9 may be formed in any manner, but as shown, comprise abolt 11 formed with a forked head 12 between the limbs of which 'thelinks 8 are pivoted by means of a bolt, pin

or the like 10. As will be seen from the drawings, when the lazytongsystem is in the retracted position the links lie closely one againstthe rother and if desired the rearmost links may be shaped to fitagainst the back of the oven.

vThe shelf 13 to be projected, preferably, and as shown iS in the formof a roasting shelf of grid-like nature, comprising a rectangular frame,

kthe sidemembersof which come upon inwardly projecting guides 14suitably attached to the sides of the oven.v For example, they may beattached tothe detachable side members (not shown on the drawings)usually found adjacent the side walls on the interior of gas ovens.

` transverse member. 15 of the frame or shelf 13, when position (Figs. 1and 2) comes closely adjacent the front linksof the lazytong system, the`free outer ends of which links carry hook-like clips or'projections 16,which engage over this Atransthat the frame 13 is caused to partake ofany movementsimparted-to the lazytong system.

the shelf is in the retractedr In the vd rawings, the pivot orhinge of.the oven door 18 is indicated at 19. The door 18 is connected to thelazytong systemin the embodiment of the device shown in the drawings, bythe following mechanism.

Each of the rearmost links 8 system has attached thereto a' somewhat Lshaped member 20 by riveting or otherwise (or instance they may be casttogether), the lower horizontal-and extends beneath the lazytong system.Towards the free outer ends these lower arms have pivotally connectedthereto links 21. The other ends of these links 21 are pivotallyconnected to a somewhat T shaped' member 22 adjustably positioned bymeans of a locking screw or the like upon a central rod 23V of desiredlength. The free end of` the rod 23 `has pivotally connected thereto twofurther links 24 and'25. The link 2li passes to a lug or lugs 26 Von oneinner side face of the oven as shown, which lugs and their method of'connection may be similar to the lugs 9, whilst the other link 25passes to Vsimilar lugs 27on the inner surface of the door 18 in adesired position relative to the axis of the door, and the link 25 ispivotally attached to the lugs 27. vIt should be realized that the links24 and 25 Yare retained in position in the lugs 26 and 27 respectivelyby removable pins or bolts .23 and 29.., In the closed position of thedoor, the links ,21, the rod' 22 and the links 24 and 25y assume 4thesubstantial position shown in Fig. 1. K e When opening the door 18, theopening movement iscommunicated to' the link 25, which pulls upon thevcentral rod 23 andalso causes the link 24 to turn about its pivottowards the front. Combinedvmovements` cause the central rod 23 also tobe drawn towards the front and the two links attachedto the T fitting 22are therefore also caused to turn about their connections with the Lshaped members 20. The links and `rods are so relatively positioned andof such relative dimensions and the pivots and eyes therefor so arrangedand of such relative sizes that the door can be moved as indicated inFig. 2, through about 90 before the links 21 come into such a positionthat a pull ris imparted to the members 20. This, as will be realized,allows the door l3 to be opened through 90 without disturbing the shelf13 and permitsaccess to be vobtained to the other shelves and the likeof the oven.

UponV still further opening movement being given to theV door 18,however, a pull is imparted to each of the fittings 20 by the links 21,and Athis pull is imparted to the rearmost links 8. This, causes theselinks 8 to move aboutY their central pivot l0 and in turn causes thelazytong system to beextended. so thatthe outer ends of the front linksthereof move through a greatly extended path, as is usual in lazytongsystems. As, however, the outerends of these front members are inconnection with the shelf 13, through the hooks or fittings 16, it willbe realized that the nal opening movement of the door causes ,the'fullprojection of the shelf 13. This is the position shown in Fig. 3, and itwillrbe realized that from the position shown in Figs. 2 and 3, the door18 has been moved intosuch a position that the shelf 13 in movingforwards does not come into'contact therewith.

Although a simple slideway 14 has been shown, it is preferred to use aslideway with overhanging portions coming above the top of theside ofthe lazytongY V21 imparts motion system, can quickly be ,central rod 23,and a locking set screw v3) passing therethrough and into one of .feetthe extension ofthe lazy'tong,

members of the frame 13, so that when the shelfv 13 is in its fullyprojected position it does not tilt.

Y To assist the action, moreover, if desired towards the rear portion,the shelf 13 may be furnished withwheels or rollers 30 for rolling onthe guideways 14,' and at the front, the guideways may be furnished withan upstanding projection or projections 3l to minimize the frictionalcontact. The upstanding projections 3l can if desired be replaced byother wheels or rollers, carried by the guideways 14. The rod 25 isformed or provided with an upstanding projectinsr portion which comesbeneath the shelf 13 when the latter is projected and assists inv itssupport.

When the door 18 is closed vfrom the fully open position (Fig. 3), thefirst movement-causes the front links 24 and 25 to force the central rod23 rearwardly, and this in turn through the links to the two L shapedmembers 20,'which readily brings the rear links 8 to their closedposition. These rear links 8 in turn cause the quick closing of thelazytong system, and this, as will thel retraction of the shelf 13. v

As will be realized, the pivotal connection between the front links 24and 25 and their lugs, and the pivotal connection l0 of the lazytongremoved, leaving the be withdrawn from the quickly insertedthereproviding suitable lugs whole mechanism free to oven, and asreadily and into. Inthis manner, by in desired positions in the oven,and on the door, existing ovens may have mechanism for efectingmovements of the shelves readily installed therein. y

' The construction in some cases, however, can as shown in Fig. 5takethe form of vertically extending rods and back of the oven, and at adesired position on the door, to form the foundation for receiving theconnection of the shelf moving device, so that these connections canreadily be adjusted in a vertical direction, permitting the iitting tobe brought to any heightV in the oven, thus permitting the tting to beused in conjunction with a grid, baking shelf or otherwise, locatedwhere desired.

The somewhat T shaped fitting 22 to which the links 2l are pivotedpreferably comprisesa cliplike portion 32 to embrace and be slidableVupon the 33 (Fig.

a number of recesses or holes 34 in the end of the rod 23 in this mannerthe said tting V22 can be adjustably positioned on the rod 23, amongstother purposes. to permit the movement of the shelf, at anyldesired andsuitable angular opening of the door.

If desired, one or more of the links or rods may also be made in a ormto be extended or shortened, and be set and retained at any requiredlength.

Although the particular link and lever system described for impartingthe Ymover'nent of the door to theY lazytong system is particularlyadvantageous, it is obvious that it may be replaced and lever, or othermechanism hav- Zw by other link ing 'a similar effect, that is capablethe rear members of the lazytong of acting upon system, to efafter adesired opening of the door, and also to effect the collapse or closingof the said lazytong system, on

be understood, effects j 40, ribs or the like at the side 7T rifle Clify at the front may carry than the first movement of the door from thefully open towards the closed position.

The connection between the lazytong system and the shelf or the like tobe operated can be varied as desired and to adapt it to any particularuse.

It will be realized that in place of the lazytong system acting upon asingle shelf or the like, it may act to project a compartment, drawer-or the like, and also it will be realized that in place of a singlelazytong system being employed, more one such system may be utilized toeffect the movements of desired parts.

ln some cases, constructions according to the invention may be attachedto other framework adapted readily within and if necessary fixed inexisting ovens, it only being necessary to provide a suitable connectionto the door.

In such a construction, the frame may be a casting or built up, andadapted to slide into the oven and to be supportedat the sides by theusual ledges or projections, and fixed at the front by suitableadjustable or other catches, engaging the front of the oven on theinterior. This frame carries bearings for the pivots such as l0 and 28and the upper surface forms a suuport for the sliding grid, shelf or thelike, which at the rear may have rollers to run on the upper surface ofthe frame. The frame also rollers for the grid or shelf to run on.

rl'his construction renders it possible to supply or sell a completefitting ready to go into any existing ovenand only necessitates inaddition attaching one single fitting to the door to carry the pivotsuch as 29; this fitting may be attached by one-hole fixing.

The invention has been particularly described as applied to ovens, butit should be realized that it may be used with equal facility in thecase of cupboards, wardrobes or otherwise, and in any case where amovable door is in association with shelves or the like.

VThe invention is not limited to the precise forms or details ofconstruction described, as these may be varied to suit particular cases.

What I claim and desire to secure by Letters Patent the United States ofAmerica is:

l. The combination with a housing having a shelf portion, a system oflazytong links connected to said door and to said shelf portion-forprojecting the latter forward, connecting links whereby said lazytonglinks are connected to the door, and means including said connectinglinks, whereby the first part of the opening movement of the door doesnot actuate the lazytong links, while subsequent movement causes saidlinks to project the shelf portion rapidly forward.

2.,'1he combination, with a housing having a movable door connectedthereto, of a slidably mounted shelf portion, a system of lazytong linksarranged at the rear of said shelf portion, connecting means betweensaid lazytong system and said shelf portion, and means connecting thedoor and the rearmost links of said lazytong system, whereby the firstpart of the opening movement of the door is not communicated to saidlazytong system while ,subsequently said links are brought into actionto project the shelf portion forward.

3. The combination, with a housing having a movable door connectedthereto, vof a slidably mounted shelf portion, a system of lazytonglinks arranged at the rear of said shelf portion, a link a rectangularor'- to be disposed of said links being so movable door connectedthereto, of a movablev rating lazytong mechanism,

ways for said shelf, a

connected to the door, a further link connected at the remote end ofsaid link and leading to a fixed point in the housing, a rearwardlyprojecting link pivoted to the joint between the said links, a T-shapedhead carried on said last-mentioned link, and further links between saidT-shaped head and the two rearmost links of the lazytong system, all ofsaid links being so proportioned that during the first part of theYopening movement of i the door no substantial movement is applied to thelazytong system while after a predetermined movement the lazytong linksserve to project the shelf portion rapidly forward.

4. The combination, with a housing having a movable door, of ahorizontally slidable shelf portion, guideways for said shelf portion toenable same to be projected forward out of the housing, a system ofpivoted links arranged at the rear of said shelf portion, said linksbeing pivoted together as a lazytong system, a central fixed support fora pair of said links, a forwardly projecting arm connected with eachlink of said pair of links, connecting links between the movable doorand said forwardly projecting arms, including lost motion means wherebythe first portion of the opening movement of the door is without effecton. ther pivoted link system, while further movement causes same toproject the shelf portion forward in its guideways. i

5. A housing embodying a shelf, guideways in said housing for saidshelf, a system of lazytong Y links arranged at the rear of said shelf,said links pivoting around a fixed lug at the rear ofsaidhousingforwardly projecting arms on the rearmost links on each side ofsaid system, a pivotal door to said housing, a connecting link between alug on said door located comparatively close toV said hinge, and thefree end of V-a further link pivoted to a fixed point in said housing, arearwardly projecting rod pivoted at the joint between said two links,and a T-shaped head carried on said rearwardly extending rod and pivotedto links leading to the said forwardly extending arms, all

rotational movement of said T-shaped head while further movement causessaid head to move vin a forward direction to cause the lazytong links toproject said shelf forward rapidly. n

6. A housing comprising an inserted shelf supporting unit, guideways insaid unit, a shelf carried on said guideways, means for projecting saidshelf forward when desired, said means incorpolinks between saidshelf-moving means and a lug connected to the said door,includingmeanswhereby the first portion of the opening movement of the door hasno effect on the links serving for projecting the shelf forward, whilefurther movement of the door causes said shelf to be projected forwardrapidly.

'7. A housing embodying a movable shelf, guidesystem of lazytong linksarranged at the rear of said shelf and pivoted to a fixed lug at therear cf said housing, connecting means between said lozytong link systemand two sets of lugs, one associated with vertically extending guides onthe housing and the other on vertical guides on the moving door, saidconnecting means including means whereby during the rst part of theopening movement of the door, no movement ther movement of said doorcauses said lazytong links to project the shelf forwardly.

- ERNEST LODGE WILSON.

proportioned that the first` part of the opening movement of the doorcauses a door, connecting` is applied to said shelf, while fur- Y

